The most convenient or helpful computer function ever

Call this a dumb thread. But as I was performing some intense computing tasks, a frightening thought crossed my mind.

A computer world with no such thing as copy & paste

Can you imagine if we lived in a world where there was no such thing as copy paste? Think about that for a minute next time you need to use this function. How the heck did we manage without this before it was invented?

These terrifying images reminded me of the days before copy & paste as we know it today.

Anyone else have any thoughts on similar technologies you take for granted, but would ruin your world if they didn't exist?

Reminds me of the days of the typewriters. You could only type on a maximum of two sheets at the time.
Makes me wonder how they made and send out nation-wide documents and such.
All those typing noises, those employees.

But then again I'm not old enough to know if that's really how they did it.